mos6581
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
mos6581 [2011/09/28 09:50] – wadmin | mos6581 [2011/10/01 13:08] – wadmin | ||
---|---|---|---|
Line 1: | Line 1: | ||
+ | {{cnmos.JPG}} | ||
+ | |||
**Foreword :** | **Foreword :** | ||
- | This '' | + | This '' |
* Data extracted from ' | * Data extracted from ' | ||
* quotes from various Websites | * quotes from various Websites | ||
Line 7: | Line 9: | ||
All the sources are listed in the last section of the Datasheet. | All the sources are listed in the last section of the Datasheet. | ||
- | ---- | + | == Once upon a time... |
- | + | ||
- | + | ||
- | **Once upon a time...** | + | |
//In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. // | //In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. // | ||
Line 21: | Line 19: | ||
//Until the SID enthusiasts took the flag...// | //Until the SID enthusiasts took the flag...// | ||
- | ===== MOS6581 Datasheet ===== | ||
- | {{cnmos.JPG}} | ||
- | ===== Introduction | + | ===== MOS6581 SOUND INTERFACE DEVICE (SID) ===== |
The 6581 Sound Interface Device (SID) is a single-chip, | The 6581 Sound Interface Device (SID) is a single-chip, | ||
Line 116: | Line 112: | ||
Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation: | Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation: | ||
- | Fout = (Fn * Fclk/ | + | < |
Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by: | Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by: |
mos6581.txt · Last modified: 2018/08/26 09:36 by 127.0.0.1